AutoWeek reports on some follow up details pertaining to the future Infiniti Q50 mid-sized luxury sports sedan—yea, the one replacing the G37 and spearheading Infiniti’s controversial unified nomenclature system.

After speaking to Ben Poore, head of Infiniti of the Americas, the new Q50 sedan will utilize a turbocharged four-banger sourced from Mercedes-Benz. Additionally, the Q50 sedan will also receive a clean diesel for its Europe variant with a US-bound version potentially in the works. All-wheel drive is also set to reach the Q50 Hybrid at some point in the future.

But to further elaborate, the Q50 will begin sales this summer with the current G37’s 3.7L V6 seeing standard duty. The turbocharged gasoline four-cylinder is sourced from a Renault-Nissan Alliance partnership with Mercedes-Benz’s parent, Daimler.
Specifically for the diesel, Infiniti’s current global president and former president of Audi USA, Johan de Nysschen, said he firmly believes that its lineup is missing a line of clean-diesels, which they view as a crucial segment in world luxury markets. However, de Nysschen said that Infiniti’s current stance on clean oil-burners is currently in the research and development period.

“You must have diesel available to be a serious member of the premium market,” de Nysschen told AutoWeek. “We simply lack a vehicle in those segments. We can’t compete with the world’s most powerful luxury auto companies on a part-time basis.”